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http://hdl.handle.net/2122/10191| Authors: | Lucchi, R. G.* Sagnotti, L.* Camerlenghi, A.* Macrì, P.* Rebesco, M.* Pedrosa, M. T* Giorgetti, G.* |
Title: | Marine sedimentary record of Meltwater Pulse 1a in the NW Barents Sea continental margin | Journal: | Arktos, The Journal of Arctic Geosciences | Series/Report no.: | /1 (2015) | Issue Date: | 20-Nov-2015 | DOI: | 10.1007/s41063-015-0008-6 | URL: | http://link.springer.com/article/10.1007/s41063-015-0008-6 | Keywords: | Meltwater Pulse 1a Plumites NW Barents Sea Arctic paleomagnetism deglaciation | Subject Classification: | 04. Solid Earth::04.04. Geology::04.04.04. Marine geology | Abstract: | The upper continental slope of the Storfjorden- Kveithola Trough Mouth Fans (NW Barents Sea) contains a several m-thick late Pleistocene sequence of plumites composed of laminated mud interbedded with sand/silt layers. Radiocarbon ages revealed that deposition occurred during about 130 years at a very high sedimentation rate of 3.4 cm a-1, at about 7 km from the present shelf break. Palaeomagnetic and rock magnetic analyses confirm the existence of a prominent, short-living sedimentary event. The plumites appear laterally continuous and were correlated with the sedimentary sequences described west of Svalbard and neighboring glacial depositional systems representing a major event at regional scale appointed to correspond to the deep-sea sedimentary record of Meltwater Pulse-1a. We also present new sedimentological and geochemical insights, and multi-beam data adding information on the palaeoenvironmental characteristics during MWP-1a and ice sheet decay in the NW Barents Sea. |
| Appears in Collections: | Article published / in press |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| Lucchi et al 2015 Arktos.pdf | Main article | 11.35 MB | Adobe PDF | View/Open |
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